/*
 * Copyright (c) 2007 The Chai Team
 *
 * Permission is hereby granted, free of charge, to any person
 * obtaining a copy of this software and associated documentation
 * files (the "Software"), to deal in the Software without
 * restriction, including without limitation the rights to use,
 * copy, modify, merge, publish, distribute, sublicense, and/or sell
 * copies of the Software, and to permit persons to whom the
 * Software is furnished to do so, subject to the following
 * conditions:
 *
 * The above copyright notice and this permission notice shall be
 * included in all copies or substantial portions of the Software.
 *
 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
 * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES
 * OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
 * NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT
 * HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY,
 * WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
 * FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR
 * OTHER DEALINGS IN THE SOFTWARE.
 */

package com.google.projects.chai.util;

/**
 * Abstracts various configuration parameters. This class should have no static
 * methods other than the getCurrent() method; config parameters should be
 * inheritable by other instances of this class.
 * <p>
 * Currently, there is only one implementing class: itself. Eventually, we will
 * want to consider whether to allow for different configurations based on
 * properties files or subclasses. Subclasses are more of a maintenance burden,
 * but are necessary if we need something other than flat text properties.
 *
 * @author dap
 */
public class Config {
        private static Config config = new Config();
        private boolean sendEmail;
        
        /* TODO while developing */
        private Emailer mailer = new Emailer() {
                public void sendEmail(EmailMessage msg) {
                        // DO NOTHING
                }
        };
        
        /**
         * Returns a configuration object representing the current 
         * configuration.
         */
        public static Config getCurrent() {
                return config;
        }
        
        // TODO while we're still developing
        public void setMailer(Emailer mailer) {
                this.mailer = mailer;
                this.sendEmail = true;
        }
        
        public Emailer getMailer() {
                return mailer;
        }

        public int getPasswordHashLength() {
                return 32;
        }

        public String getSiteName() {
                return "eXpenseTracker";
        }

        public String getEmailSubjectPrefix() {
                return getSiteName() + ": ";
        }

        public String getPasswordSalt() {
                return "DkZwLa@s(az3Ks223FN,AzP;q!*dds)2lzlsdk3";
        }

        public int getConfirmationHashLength() {
                return 32;
        }

        public boolean getSendEmail() {
                return this.sendEmail;
        }

        private Config() {}
}
